| Bibliography |  Suggestions |
| 1 | Sigrist, M., Texts from the Yale Babylonian Collections. I, Sumerian Archival Texts 2, Bethesda 2000 |
| 2 | Turner, J.W., Early Mesopotamian Agriculture: A Quantitative Model for Ur III Umma, Ph.D. Diss., Yale University 1981 |
| http://collections.peabody.yale.edu/search/Record/YPM-BC-015094 |
| http://oracc.museum.upenn.edu/epsd2/P143266 |
| http://www.ebl.lmu.de/library/YBC.353 |
| http://cdli.earth/P143266 |